How do I validate that a date selected in a date picker is a Friday?

Greetings Experts,

My users are submitting reports. The status date for the report has two conditions: (1) it cannot be for a previous week and (2) it must be a Friday.

I know how to set a comparison validator on the text field where the date picker puts the selected date (to make sure it's not in the past), but what I cannot figure out for the life of me is how to validate the user's selection is a Friday (and this could change - may become a Monday in the future).

I'm using Visual Studio 2008, with the Ajax Toolkit (from www.asp.net) for the calendar control extender on the text box.

And I'm a noob - so please be gentle with me!  :D

Is there a "visual " way to do this? I've sorta been thrown to the wolves on this one and to be honest wouldn't know how to code if my life depended on it.
m1cajahAsked:
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burakiewiczConnect With a Mentor Commented:
if (DateTime.Parse(TextBox1.Text).DayOfWeek == DayOfWeek.Friday)
                {

                }
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m1cajahAuthor Commented:
Hi burakiewicz,

That was fast!  Now... where does that go? It doesn't go in the ASPX page source does it? Or is that "code behind" where I double-click on the text field and it opens a VB file that is used to support that page?

M
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burakiewiczCommented:
that would go in the codebehind, if you need javascript for the aspx page let me know
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m1cajahAuthor Commented:
So I have to have code behind AND javascript on the ASPX page?
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burakiewiczCommented:
you can have either.  You can do it with code behind server side.  Or you can do it client side with javascript.  These are 2 seperate ways of doing it.
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